Sewing machine



Jan. 23, 1945 K, P. HOLLANDER SEWING MACHINE Filed April 27, 1943INVEN'IOR KR HOLLANDER ATTORNEYS Patented Jan. 23, 1945 UNITED STATESPATENT QFFIC'E Application April 27, 1943, Serial No. 484,727 In CanadaMay 14, 1942 1 Claim.

This invention relates to sewing machines used in the production ofornamental trimming mate rial of the ma ra'bou type, such materialconsisting of a strip of feathers having their quill portions sewn inoverlapping relation to a reinforcing element such as a length of cordor string. The conventional sewing machines used in making this materialare not entirely satisfactory since they do not consistently produce aproduct having its component parts properly seWn together at all points.

I I have found that the foregoing difficulty is due largely to haphazardlateral movement of the feathers and the reinforcing cord or twine asthese parts are fed beneath the presser foot to the needle. It. is alsodifiicult .to correctly inter pose each feather between the presser footand the feeding mechanism so that it will travel in a straight lineparallel with the cord or twine as it is fed to the needle.

According to my invention, the foregoing difiiculties are eliminated byremoving the conventional presser foot, which has a smooth bottomsurface, and substituting a presser foot having a full length,downwardly opening bottom channel through which the reinforcing cord ortwine and the quill portions of the feathers are fed to the needle inproperly assembled relation, being held against excessive verticaldisplacement or lateral wandering by the defining walls of the channel.

In its preferred embodiment my improved presser foot is formed with adownwardly opening, longitudinally extending channel open at both ends,said channel being made of decreasin width from its ends to anintermediate point where the channel intersects a relatively long andnarrow transversely arranged needle slot extending from the top to thebottom surface of the presser foot. The needle slot is longer than thewidth of the channel and is arranged so that the end portions of the'slot form, in effect, recesses lying at opposite sides of therestricted portion of the channel. That portion of the presser footwhich forms the top wall of the downwardly opening channel is providedwith a hole through which the cord or twine is led into the channel,said hole being located in advance of the needle slot and beingpreferably inclined so that its lower end is nearer to the needle slotthan its upper end.

The foregoing and other objects, advantages and characteristic featuresof my invention will be more readily understood from the followingmachine. I

Fi 2 is a top plan view of the assembly shown in Fig. 1. This view alsoshows the manner in which the feathers are inserted in the entrance endof the presser foot channel along which the feathers are fed by theconventionalfeed dogs. Fig. 8 is a transverse sectional view along theline 33 of Fig. 2;

Fig. 4 is an end elevation of the presser .foot per se and shows howthis element appears when looking toward the entrance end of the channelprovided therein.

Fig. 5 is a bottom plan view of the presser foot shown in Fig. 4.

In the present drawing I have shown my improved presser foot 5 inassociation with only those conventional parts of a sewing machine whichneed to be referred to in describing the construction and application ofmy invention. Such conventional parts comprise the presser footsupporting post 6, the needle 1 and the conventional side feed dogs 9and central feed dog In. The presser foot 5 is shown attached to post 6by a shank extension II which may be of any conventional or desiredconstruction.

The bottom surface of the presser foot 5 is recessed to provide acentrally located longitudinally extending channel I! open at both ends.This channel is made of gradually decreasing width from its ends towardan intermediate point where the channel intersects a relatively long andnarrow transversely arranged needle slot 13 which extends from the topto the bottom surface of the presser foot. As clearly shown in Figs. 1and 5, the needle slot is longer than the width of the channel so thatthe end portions of the slot form, in effect, recesses lying at oppositesides of and communicating with the restricted portion of the channel.At its entrance end the depth of the channel is preferably increased ina flaring manner as indicated at IS in Fig. 1.

The portion of the presser foot which forms the top Wall of thedownwardly opening channel I2 is pierced by an inclined cord or twinereceiving hole It which lies between the needle slot l and the entranceend of the channel. This hole cord or twine to which the feathers aresewn is introduced into the channel I2 through the hole I6. The feathersIl are fed beneath the presser foot so that the overlapping quills I8 ofsucceeding feathers are received in side by side relation within thechannel I2 and are gripped between the top wall of the channel and thecentral feed dog II]. The soft downy barbs of the feathers which projectlaterally beyond the sides of the channel I2 are gripped between theside feed dogs 9 and bottom surfaces I9 of the presser foot which lie atopposite sides of the channel. As the quill portions of the feathers andthe overlying cord are fed past the needle slot I3 they are sewntogether by the operation of the needle I which, as is usual in machinesof this type, is alternately shifted toward opposite ends of the needleslot I3. It will thus be seen that the quills of the feathers and thecord or twine are sewn together at the restricted intermediate portionof the channel where these parts are held in properly assembled relationby the confining walls of the channel. The channel is made of increasingwidth toward its opposite ends to facilitate movement of the feathersand cord toward and away from the restricted portion of the channelwhere the sewing takes place.

While the dimensions of the channel I2 are not particularly critical itis important that the depth of the channel should not be so great as toprevent the quill portions of the feathers and the overlying cord ortwine being properly gripped between the top wall of the channel and thecentral feed dog. It is also important that the width of the channel besuch that the quill portions of the feathers and the cord or twine willbe held in closely grouped relation by the walls of the channel at thepoint where the sewing occurs.

Having thus described what I now conceive to be the preferred embodimentof this invention it will be understood that various minor modificationsmay be resorted to within the scope and spirit of the invention asdefined by the appended claim.

Having thus described my invention, what I claim is:

A sewing machine presser foot for use in the production of ornamentaltrimming material of the marabou type, said presser foot being providedwith a longitudinally extending featherreceiving channel in the bottomsurface thereof and with a relatively long and narrow transverselyextending needle slot extending from the top to the bottom surface ofthe presser foot, said channel gradually decreasing in width from bothends to an intermediate point in the length of the channel and saidneedle slot being arranged to intersect said channel so that the ends ofthe slot provide recesses lying at opposite sides of and communicatingwith the narrowest portions of said channel, the portion of the presserfoot forming the top wall of the channel being pierced by an openingthrough which the cord or twine to which the feathers of the trimmingmaterial are sewn is introduced into said channel, said opening beinglocated between the needle slot and the entrance end of the channel andbeing inclined so that its lower end is nearer to the needle slot thanits upper end.

KLAUS PETER H OLLANDER.

